The video in question https://youtu.be/2scKB-FEQL8?si=NEzP-FvJWo9mzEzS
I think the simplest description is like playing among us and just being able to focus on your tasks for the round. The tasks get done and the goal is achieved. There's someone there who should stop the imposter from getting to you.
The not quite an ELI5 answer:
It's a small team of people focused on solving a problem. It is primarily used by people working in tech and with agile methodology.
When it's done right and works it's like the a team
If no one else can help and if you can find them. Maybe you can hire, The A-Team.
Scrum in itself is just a framework of work process. Designed to maximise the result of the work put in for a short period of work. No distractions, no interruptions. Just setting an achievable goal and committing to it. This works really well in agile environments, as it's focused on short term goals.
These are buzzwords and are often mentioned without understanding or adherence. It's difficult stay true to these in the real world.
There are people in the team whose job it is to keep all distractions away from those working towards the goal. As that just impedes it.
Scrum is a lightweight framework that helps people, teams and organizations generate value through adaptive solutions for complex problems
The scrum guide is pretty brief and concise if you want further reading.
So they did pretty much this https://youtu.be/vXe8pe18MNk
There's a setting to turn off full screen. Edit: it's edge to edge display.
Took me a few days to realise you could do that. Was slightly annoying, but should be the other way by default really.